MakeItFrom.com
Menu (ESC)

C68700 Brass vs. C37700 Brass

Both C68700 brass and C37700 brass are copper alloys. They have 80% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C68700 brass and the bottom bar is C37700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Poisson's Ratio 0.32
0.31
Shear Modulus, GPa 41
39
Tensile Strength: Ultimate (UTS), MPa 390
400
Tensile Strength: Yield (Proof), MPa 140
160

Thermal Properties

Latent Heat of Fusion, J/g 190
170
Maximum Temperature: Mechanical, °C 160
120
Melting Completion (Liquidus), °C 970
890
Melting Onset (Solidus), °C 930
880
Specific Heat Capacity, J/kg-K 400
380
Thermal Conductivity, W/m-K 100
120
Thermal Expansion, µm/m-K 19
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
27
Electrical Conductivity: Equal Weight (Specific), % IACS 25
30

Otherwise Unclassified Properties

Base Metal Price, % relative 26
23
Density, g/cm3 8.3
8.1
Embodied Carbon, kg CO2/kg material 2.8
2.6
Embodied Energy, MJ/kg 46
45
Embodied Water, L/kg 340
320

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 90
120
Stiffness to Weight: Axial, points 7.3
7.1
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 13
14
Strength to Weight: Bending, points 14
15
Thermal Diffusivity, mm2/s 30
39
Thermal Shock Resistance, points 13
13

Alloy Composition

Aluminum (Al), % 1.8 to 2.5
0
Arsenic (As), % 0.020 to 0.1
0
Copper (Cu), % 76 to 79
58 to 61
Iron (Fe), % 0 to 0.060
0 to 0.3
Lead (Pb), % 0 to 0.070
1.5 to 2.5
Zinc (Zn), % 17.8 to 22.2
35.7 to 40.5
Residuals, % 0
0 to 0.5